Vasily
28b09e78f5
Qmake attempts to invoke the linker with the default `g++` binary even when we changed the binary. This will compile error when using LTO. For clang: ``` /usr/bin/ld.gold: error: /usr/lib/llvm-3.8/bin/../lib/LLVMgold.so: could not load plugin library: /usr/lib/llvm-3.8/bin/../lib/LLVMgold.so: cannot open shared object file: No such file or directory ``` For GCC: ``` lto1: fatal error: bytecode stream generated with LTO version 6.0 instead of the expected 4.1 ```
40 lines
1.1 KiB
Plaintext
40 lines
1.1 KiB
Plaintext
GCC_VERSION = $$system("g++ -dumpversion")
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greaterThan(GCC_VERSION, 6) {
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message('g++' version is above 6. Using regular g++.)
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}
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else {
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message('g++' version is not above 6. Attempting to use highest specific version.)
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system(g++-7 --version) {
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message('g++-7' found.)
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QMAKE_CXX = g++-7
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QMAKE_LINK = g++-7
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}
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system(g++-8 --version) {
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message('g++-8' found.)
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QMAKE_CXX = g++-8
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QMAKE_LINK = g++-8
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}
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system(g++-9 --version) {
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message('g++-9' found.)
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QMAKE_CXX = g++-9
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QMAKE_LINK = g++-9
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}
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}
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include(clang-gcc-common-switches.pri)
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QMAKE_CXXFLAGS += -Wpedantic
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QMAKE_CXXFLAGS += -Werror
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# GCC only switches
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QMAKE_CXXFLAGS += -Wduplicated-branches -Wduplicated-cond -Wlogical-op -Wrestrict -Wnull-dereference
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# Sign conversion warns on auto generated Qt MOC files.
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QMAKE_CXXFLAGS += -Wconversion -Wno-sign-conversion
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QMAKE_CXXFLAGS += -Wzero-as-null-pointer-constant
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# Qmake will append this even though higher optimization levels are used.
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QMAKE_LFLAGS_RELEASE -= -Wl,-O1
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